Toner Supply Without Id Sensor And Td Sensors - Ricoh B064 SERIES Service Manual

Toner Supply without ID Sensor and TD Sensors

Toner supply can continue even if either or both sensors fails:
Failed Sensor
TD sensor
ID sensor
TD and ID sensors
Abnormal TD Sensor Output
If this occurs, toner supply is controlled using pixel count and Vsp/Vsg.
Abnormal output detected during initialization of the developer: An SC is
logged and SP2906 (TD Sensor Control Voltage & Check) will display 0.00V.
• During the TD sensor auto adjustment, the TD sensor output voltage (Vt) is 2.5
volts or higher even though the control voltage is set to the minimum value
(PWM = 0). The machine logs SC341 TD Sensor Adjustment Error 1.
• During the TD sensor auto adjustment, the TD sensor output voltage (Vt) does
not come in the target range (3.0 ± 0.1V) within 20 seconds. The machine logs
SC342.
Abnormal output detected during copying: If one of the following conditions is
detected more than 10 times consecutively:
• Vt = 0.5 volts or lower
• Vt = 4.0 volts or higher
Then SC340 (TD Sensor Output Error) is logged.
Abnormal ID Sensor Output
Abnormal output detected during process control at power-on: SC353 or
SC354 is issued. Toner supply during copying will then be controlled using the TD
sensor only, until the machine is repaired.
Abnormal output detected when updating Vref: SC350, 351, or 352 is issued,
and Vref is not updated (the machine uses the current value).
SM
CÓPIA NÃO CONTROLADA
DEVELOPMENT AND TONER SUPPLY
Toner Supply Method
ID sensor + Image Pixel Count
TD sensor (but Vref is nor updated)
Image Pixel Count
6-79
CÓPIA NÃO CONTROLADA
B064 Series/B140 Series
/B246 Series/D052 Series